public function registerNewMember() {
        global $usces;

        $password = self::generateWelcartCompliantRandomPassword();

        // Add a message that a temporary password is being used to the body of the email
        add_filter('usces_filter_send_regmembermail_message', function ($message) use ($password) {
            return __('You are currently using a temporary password. Please log in with your Amazon account from My Page and change your password.', 'wcexaap') . "\r\n\r\n" . __('temporary password : ', 'wcexaap') . $password . "\r\n\r\n" . $message;
        });
        $delivery = isset($_SESSION['usces_entry']['delivery']) ? $_SESSION['usces_entry']['delivery'] : [];
        $customer = isset($_SESSION['usces_entry']['customer']) ? $_SESSION['usces_entry']['customer'] : [];
        $giftShipping = isset($_REQUEST['giftShipping']) ? (bool)$_REQUEST['giftShipping'] : false;
        $_POST['customer']['password1'] = $password;
        $_POST['customer']['password2'] = $password;
        $_POST['customer']['mailaddress1'] = $customer['mailaddress1'];
        $_POST['customer']['mailaddress2'] = $customer['mailaddress2'];
        $_POST['member_regmode'] = 'newmemberfromcart';
        if ($giftShipping === false) {
            $_POST['customer'] = $delivery;
            $_POST['customer']['password1'] = $password;
            $_POST['customer']['password2'] = $password;
            $_POST['customer']['mailaddress1'] = $customer['mailaddress1'];
            $_POST['customer']['mailaddress2'] = $customer['mailaddress2'];
            $_POST['customer']['name1'] = $customer['name1'];
            $_POST['customer']['name2'] = $customer['name2'];
        }

        $registerPayload = $_POST;

        if ($giftShipping === false) {
            $_POST['customer']['address1'] = !empty($delivery['address1']) ? $delivery['address1'] : 'temp';
            $_POST['customer']['address2'] = !empty($delivery['address2']) ? $delivery['address2'] : 'temp';
            $_POST['customer']['tel'] = !empty($delivery['tel']) ? $delivery['tel'] : '00000000000';
        }

        // validate $_POST
        $errormessage = $usces->member_check_fromcart();
        if (!empty($errormessage)) {
            return $this->getErrorResponse(
                self::REGISTER_WITH_AMAZON_ERROR,
                [$errormessage],
                [$errormessage]
            );
        }

        // revert $_POST back to Amazon address which may have missing values
        $_POST = $registerPayload;

        add_action('usces_action_member_registered', [$this, 'onMemRegistrationSuccess'], 10, 2);
        if ($this->createAccount() !== 'newcompletion') {
            return $this->getErrorResponse(
                self::REGISTER_WITH_AMAZON_ERROR,
                [$usces->error_message],
                [$usces->error_message]
            );
        }
    }